Incorrect/misleading documentation regarding uniqueness of HasIndex

[irontoby]

This documentation states that HasAlternateKey will "force the properties to be read-only" and we should "use HasIndex(Expression<Func<TEntity,Object>>) to specify uniqueness in the model that does not force properties to be read-only."

However, HasIndex(Expression<Func<TEntity,Object>>) does not actually create a unique index; it creates a non-unique index. This sentence should be removed or clarified to indicate whether there's another way to create a unique index which is not read-only.

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Document Details

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• ID: eeeaa642-e6b3-e469-f3ba-d57a74770659
• Version Independent ID: 5d69f26b-f6ba-378b-2692-9922c19473e4
• Content: EntityTypeBuilder<TEntity>.HasAlternateKey(Expression<Func<TEntity,Object>>) Method (Microsoft.EntityFrameworkCore.Metadata.Builders)
• Content Source: [dotnet/xml/Microsoft.EntityFrameworkCore.Metadata.Builders/EntityTypeBuilder1.xml](https://github.com/aspnet/EntityFramework.ApiDocs/blob/live/dotnet/xml/Microsoft.EntityFrameworkCore.Metadata.Builders/EntityTypeBuilder1.xml)
• Product: ef-core-api
• GitHub Login: @dotnet-bot
• Microsoft Alias: divega

[irontoby]

My apologies, I just realized that it is indeed possible to create a unique index using .HasIndex(...).IsUnique(). Perhaps the documentation could be clarified to mention IsUnique().

[ajcvickers]

Duplicate of dotnet/efcore#17508